(19)

(11)

EP 2 512 711 A1

(12)

(43) Date of publication: 24.10.2012 Bulletin 2012/43 (21) Application number: 10788458.7 (22) Date of filing: 01.12.2010

(51) International Patent Classification (IPC):  B23C 5/22(2006.01) (86) International application number: PCT/US2010/058502 (87) International publication number: WO 2011/075313 (23.06.2011 Gazette 2011/25)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 18.12.2009 US 641399 (71) Applicant: TDY Industries, Inc. Pittsburgh, PA 15222 (US)	(72) Inventors: FANG, X., Daniel Brentwood Tennessee 37027 (US) DUFOUR, Jean-Luc Franklin Tennessee 37064 (US) WILLS, David J. Franklin Tennessee 37067 (US) (74) Representative: Baker, Colin John  Potter Clarkson LLP Park View House 58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)